Expandable Date Element for MonoTouch.Dialog

UPDATE: My apologies to Kraig Spear - he was the one who originally provided the code. Sorry for mis-crediting it! I think I had some similar stuff from Gerry High around the same time.

I had few replies, and I think I got a (mostly) working version from Kraig Spear. Glenn Stephens promted me about it today, tho, and here's a Gist with the code. I use it Trip Wallet to edit the dates, tho I need to migrate it to my other apps, too.